Homebrew PCBs

At 07:29 PM 3/7/2009 -0500, you wrote:

>Here's a bunch of spiral design files:
>
>        http://www.delorie.com/pcb/spirals/

From the web page...

"...(outer pad to corresponding inner pad = 0 ohms)..."

Come on now, you're dealing with engineers here! :-)

Can the Perl code be twiddled to report the length of the
resulting tracks?  I'm sure someone here (with better memory
than me) could use that information to compute what the
actual resistance should really be.

I'm guessing that the length of the smaller tracks would result
in a non-zero resistance measurable with a better DVM.  Such a
measurement might be a clue to the quality of the resulting board,
as opposed to simply "open/short = pass/fail".

(Actually, measuring the capacitance would probably be a better
metric... hmmm.)

I'd really like to etch a few versions of those spirals, but I have to
wait patiently for Old Man Winter to leave before I can start to
work out in the garage again.